Penholder



(No Moel.) A,

J. .Bh MAMILLAN.

PBNHQLDER.

N0.503,151. Patented Aug,15,1893.

z'ja j.

UNITED' STAT-Es ATENT OFFICE.-

JAMES R. MACMILLAN, OF MENOMONEE, ISCONSIN.l

PENHOLDER.

SPECIFICATION forming part of Letters Patent No. 503,151, dated August 15, 1893.

Application filed November 12, 1892. Serial No. 451,728- (No model.)

To all whom t may concern,.-

Be it known that I, JAMES R. MACMILLAN, of Menomonee, in the county of Dunn and State of Wisconsin, have invented certain new and useful Improvements in Penholders; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to appliances or implements known as pen-holders, which are designed to hold writing or marking pens and similar devices in proper position for eective use, and/more particularly to that type or class of pen-holders which are so arranged as to permit of the detachment or expulsion of the pen from the pen-holder without the necessity of grasping the pen itself.

. The objects of my invention are to produce a pen-holder of the type above stated, the operation of which shall be direct and positive and involve no changes in the relative longitudinal positions of the external parts of the holder.

To the above purposes, my invention consists in the novel features of construction and arrangement hereinafter described and claimed.

In order that my invention may be fully understood, I will proceed to describe it with reference to the accompanying drawings, in which- Figure 1 is a 'side elevation of apen-holder embodying my invention; the holding and expelling core or spindle being in retracted position. Fig. 2 is a central longitudinal section of the same, taken on the line 2-2 of Fig. 1. Fig. 3 is a sectional view similar to that of Fig. 2, but showing the holding and expelling spindle in projected position; said spindle and its screw-stem being shown in side elevation. Fig. t is a view in side elevation of the holding and expelling spindle and its screw-stem, detached from the other parts. Fig. 5 is a transverse vertical section of the pen-holder, taken on the line 5 5 of Fig. 1.

In the said drawings, A designates the stem or staff of the pen-holder, B the sleeve thereof, C the holding and expelling core or spindle and D the screw-stem of said spindle. These parts are to be made of hard rubber, celluloid, wood, metal or any other suitable or preferred material; the stai or stem A and the sleeve B being collectively of such length as will permit of convenient manipulation of the holder in writing or marking. The stem or staff A is shown as gradually decreased in diameter from one end to another, but it may be of uniform diameter throughout if preferred and both the stem and the sleeve may be externally ornamented in any desired manner.

At one end, which, for convenience of description, will be called the lower end, the stem or staff A is provided with a longitudinal extension ot, either formed integrally with the stem or staff as shown or suitably secured thereto. This extension d is of less diameter than that of the lower end of the stem or staff A and at its outer or lower end 'said extension is formed or otherwise provided with an external annular ange or shoulder a. A longitudinal socket a2 extends through the extension ct and a suitable distance into the lower end of the stem vor sta A, and said socket is internally screwthreaded, for a purpose hereinafter explained. Near its upper or inner end the sleeve B is formed with an internal' transverse annular groove b, into which loosely fits the fiange or shoulder a. of the extension or; the remaining upper or inner end portion of the sleeve iB loosely surrounding the extension a, and lithearrangement of the parts being such that l'the sleeve B can be rotated axially upon the stemA, by turning either the sleeve or the stem, but that the sleeve cannot be moved longitudinally of the stem or of the extension. The sleeve B is also formed with an annular transverse internal shoulder bfor arresting or limiting the retractive movement of the holding and expelling core'or spindle, as hereinafter explained. The holding and expelling spindle C is, as to itsv middle or body portion, of cylindric form and of -such external diameter as to fit closely within the 'sleeve B and yet permit the spindle to freely move longitudinally within the sleeve. At its inner or upper end the body portion of this spindle is shown as extending longitudinally inward and as reduced in diameter, as

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at c, to enter the reduced inner or upper portion of the spindle B; an annular shoulder c being thus formed at the point of juncture of the body portion of the spindle with the reduced portion or extension c, which shoulder comes at times into contact with the internal shoulder b' and thus limits the retractive movement of the spindle. Extending longitudinally inward from the upper extremity of the extension c is an externally threaded screw-stem D, which is either formed integrally with the spindle C and its extension c, or suitably secured thereto, and which enters and works closely within the internally screwthreaded socket a2 in such manner that the stem or staff A may be turned axially upon the screw-stem in either direction and thus extend or protract the spindle, and also retract the same. At its outer end the spindle C is formed with a head C split longitudinally, as at c2, so as to permit the two portions of the head to impinge oppositely against the inner surface of the lower end of the sleeve B, when the spindle is retracted, and thus securely confine the end of the pen between the sleeve and the head. Rotation of the spindle within the sleeve is prevented by a straight rib c3, which extends longitudinally of the spindle C and which works freely within a straight longitudinal groove h2 formed in the inner surface of the sleeve B. The sleeve B is shown as roughened externally to increase the users grasp upon the pen-holder, and intermediate longitudinal plain portions are also shown upon the outer surface of the sleeve, but these features are obviously not essential to the invention.

The manner of using the pen-holder is as follows: Assuming the spindle to be retracted and a pen in position, as indicated in dotted lines in Fig. l, and also that it is desired to detach the pen from the holder, the user grasps the sleeve with one hand and turns the stem or staff A to the left with the other hand. This forces the spindle C outward within the sleeve B and projects the head C out of the sleeve, as shown in Fig. 3, and expels the pen from the holder. A fresh pen may now be inserted between the head C and the lower end of the sleeve B, the end of the pen resting against the shoulder c4 at the lower end of the spindle, and the stem or stad being rotated to the right, the head C is drawn inward and the pen is firmly clamped in position. The pen may, however, be inserted when the spindle C is retracted, by thrusting it between the side of the split head and the sleeve, in the same manner as in other pen holders of the kind having a stationary split core within a tubular part or sleeve.

It is obvious that while I have shown the shoulder as formed upon the extension and the groove as formed in the sleeve, such construction may be reversed; the shoulder being formed in the sleeve and the groove in the extension; also that while I have shown the rib as formed on the spindle and the groove as formed in the sleeve, this construction may also be reversed, the rib being formed in the sleeve and the groove in the spindle.

Having thus described my, invention, what I claim as new therein, and desire to secure by Letters Patent, is

l. A pen-holder, comprising a stem or staff having an internally screw-threaded socket, a sleeve revoluble upon said stem or stad, but immovable thereon longitudinally and a spindle screw-threaded to engage the socket and having longitudinally movable and nonrevoluble connection with the sleeve, substantially as described.

2. A pen-holder, comprising a stem or stall: having a longitudinal and internally screwthreaded socket in its end and having also an extension of said end, a sleeve embracing said extension so as to turn freely thereon, but immovable longitudinally thereon and a groove-and-shoulder connection between the sleeve and the extension, and a spindle having longitudinally movable and non-revoluble connection with the sleeve and provided with an externally screw-threaded stem entering and Working within the socket, substantially as set forth.

8. A pen-holder, comprising a stem or staff having a longitudinal and diametrically reduced extension at one end, an external shoulder carried by said extension, an internally screw-threaded longitudinal socket extending through the extension and into thc stem or staff, a sleeve embracing the extension and its shoulder loosely so as to revolve thereon, a spindle having an externally threaded screw-stem engaging the socket, and a rib-and-groove connection between the spindle and sleeve, to prevent relative rotation thereof, substantially as described.

4. A pen-holder, comprising a stem or staff having a longitudinal and diametrically reduced extension at one end, an external shoulder carried by said extension, an internally screw-threaded longitudinal socket extending through the extension and into the stem or stall", a sleeve embracing the extension and its shoulder so as to revolve thereon, a spindle havinga head and an externally threaded screw-stem engaging the socket, and a rib-and-groove connection between the spindle and sleeve, to prevent relative rotation thereof, substantially as described.

In testimony that I claim the foregoing as my invention I alix my signature in presence of two witnesses.

JAMES R. MACMILLAN.

Witnesses:

C. CLARENCE PooLn, G. W. HIGGINS, Jr.

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